Physics, 30.08.2019 16:30 josephmcintosh3137
The conductivity of aluminium at room temperature is 3.82x107 ω-,m-1. given that aluminium has an atomic weight of 26.98 atomic mass units (amu), a valence of +3, and a density of 2.7 g. cm3 use the drude model to calculate a) the drift velocity of conduction electrons in a field of 25 v. m-" b) the electron mobility, c) the electron relaxation time, and d) the mean free path between electron collisions.
Answers: 2
Physics, 21.06.2019 23:00
Asubmarine has a "crush depth" (that is, the depth at which water pressure will crush the submarine) of 250 m. what is the approximate pressure (water plus atmospheric) at this depth? (recall that the density of seawater is 1025 kg/m3, g = 9.81 m/s2, and 1 kg/(ms2) = 1 pa = 9.8692 10-6 atm.) a. 34.8 atm b. 24.8 atm c. 25.8 atm d. 7.8 atm
Answers: 2
Physics, 22.06.2019 01:50
Arod of some material 0.20 m long elongates 0.20 mm on heating from 21 to 120°c. determine the value of the linear coefficient of thermal expansion [in (degrees c)^-1] for this material.
Answers: 2
Physics, 22.06.2019 09:00
In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final
Answers: 1
Physics, 22.06.2019 11:00
Alarge box of mass m is pulled across a horizontal frictionless surface by a horizontal rope with tension t. a small box of mass m sits on top of the large box. the coefficients of static and
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The conductivity of aluminium at room temperature is 3.82x107 ω-,m-1. given that aluminium has an at...
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